JP3062921B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector, and more particularly to a contact of an edge connector for inserting a circuit board such as an additional memory board (SIMM).

[0002]

2. Description of the Related Art FIG. 10 shows a prior art in which a circuit board 7 is inserted obliquely, and the circuit board 7 is rotated in one direction D in the thickness direction about the insertion end of the circuit board 7 as a center of rotation.
In FIG. 1, the terminal of the circuit board 7 is pressed into contact with the contact portion 81 of the contact 8 of the edge connector 6. In addition to the contact portion 81, a fixed holding portion 83 to the insulator 60 and a soldering portion 85 are formed on the contact 8.

[0003]

However, in the above prior art, when a contact force in the P direction is applied to the contact portion 81 of the contact 8, the soldering portion 85 is connected to the connection side between the contact portion 81 and the fixed holding portion 83. That is, since it is formed at the end opposite to the contact portion 81, a force is applied to the soldered portion 85 in the direction of peeling from the substrate (not shown), that is, the H direction. For this reason, there is a risk that a crack may be generated in the soldered portion 85 at the time of connection with the mating substrate.

The present invention has been proposed in view of the above-mentioned problems of the prior art. In an edge connector of a type in which a terminal of a circuit board is pressed into contact with a contact having a spring property, when the terminal is connected to the circuit board, the contact is connected to the terminal. An object of the present invention is to provide an edge connector in which a force applied to a solder connection portion is reduced, so that a crack or the like does not occur in a soldered portion.

[0005]

According to the present invention, there is provided an edge connector in which a circuit board is inserted into a base of a connector, and terminals of the circuit board are pressed against a contact fixed and held in the base. When the circuit board is connected, a connector can be obtained in which an engagement holding portion for preventing the soldering portion from floating from the board is engaged with a predetermined position of the connector base.

[0006]

According to the present invention described above, when a circuit board is connected, a contact force is applied to the contact portion of the contact, so that even if a force for the soldering portion to rise from the board is applied, the engagement holding is performed. Since the portion is engaged with the base, the soldering portion is prevented from floating.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a four-sided view of a connector according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG.
4 is a sectional view taken along line BB in FIG. 1, FIG. 4 is a perspective view showing a connector according to the first embodiment, FIG. 5 is a four-side view of the connector according to the second embodiment of the present invention, and FIG. C
-C sectional view, Fig. 7 is a DD sectional view in Fig. 5, Fig. 8 is a perspective view showing a connector in the second embodiment, and Fig. 9 is an example of a mating circuit board connected to the connector of the present invention. FIG.

In the following description, for the sake of convenience, in the state shown in FIGS. 4 and 8, the vertical direction of the paper is referred to as a vertical direction, and the horizontal direction is referred to as a horizontal direction.

As shown in FIGS. 1 to 4, a connector 1 according to a first embodiment has a connector base 10 for aligning and holding contacts 2 at a predetermined pitch, and a connector base 1.
0, the connector sides 11 projecting in parallel from both sides of the connector.
Are integrally formed of an insulating material.

The connector 1 in the first embodiment is for connecting to a circuit board 9 as shown in FIG. 9, for example. Therefore, the contacts 2 aligned and held on the base 10 of the connector are shown in FIGS. As best seen in FIG. 4, it is fixedly held at a predetermined pitch in the horizontal direction on the base 10 of the connector.

A circuit board 9 is formed in the base 10 of the connector 1 at a lower end of the side in the vertical direction and at an end thereof.
The pair of latches 12 that are locked to the locking portions 90 of the first circuit board 9 when inserted into the first circuit board 9 are formed so as to face each other. The pair of left and right latches 12 are formed so as to have elasticity in the facing direction, and when the circuit board 9 is sandwiched, the locking claws of the latch 12 are located on the upper surface of the first circuit board 9 (see FIG. 9). The engaging portion 90 is engaged.

Contact 2 electrically connected to circuit board 9
Are composed of a contact 2A for making conductive contact with a terminal formed on one surface of the circuit board 9 and a contact 2B for making conductive contact with a terminal formed on the other surface. 2B are alternately arranged. As shown in FIG. 2, the contact portion 21 of the first contact 2A is pressed by the circuit board 9 in a direction approaching the fixed holding portion 22 of the contact, that is, toward the soldering portion 23 of the contact. The pressing force of the contact force P is applied toward the surface. On the other hand, as shown in FIG. 3, a force acts on the contact portion 25 of the second contact 2 </ b> B in a direction in which the contact portion 25 is separated from the fixed holding portion 27. The first contact 2A is
The force is applied to the soldering portion 23 of the contact in the direction of soldering and peeling from the substrate, and no force acts on the second contact 2B in the direction of peeling of the soldering portion 28 of the contact. In the present embodiment, the contact structure in the connector of the present invention is applied to the first contact 2A.

As shown in FIG. 2, the first contact 2A has a contact portion 21 of a contact connected to a terminal on one surface of the circuit board 9 and one end of a fixed holding portion 22 of the contact to the base 10 of the connector. Are integrally joined. The limb of the contact on the side of the contact portion 21 is bent in a meandering shape to impart spring properties. The fixed holding portion 22 of the contact is pressed and held in the base 10 of the connector.

As shown in FIG. 2, the first contact 2A
And a fixed holding portion 22 of the contact, the portion having a contact portion 21 of the contact at the free end of the contact portion, and a base portion of the connector on the side opposite to the position where the soldering portion 23 of the contact is arranged. engagement of the contact to be engaged in 10
A holding part 24 is formed. The engagement holding portion 24 of the contact is engaged so as to be in contact with the inside of the concave portion of the base portion 10 of the connector.
Is prevented from moving toward the engagement holding portion 24 of the contact. Thereby, when the circuit board 9 is inserted and connected, the contact part 21 of the contact is pushed down to the fixed holding part 22 of the contact, and the solder part 23 of the contact rises to the engagement holding part 24 of the contact. Blocked,
There is no risk of cracking the solder in the soldering portion.

The connector 5 according to the second embodiment is for connecting two mating circuit boards 9 to each other. For this reason, the contacts 3 aligned and held on the base 50 of the connector are provided.
As shown in FIG. 8, 4 is formed in two stages in the vertical direction (thickness direction) of the base 50 of the connector.
Further, the contacts 3 and 4 in each stage have two types of shapes 3A, 3B and 4A4B in order to make conductive contact with the contact portions on both sides of the circuit board 9 as in the first embodiment. .

The contact 3 (3A, 3B) to which the first (lower) circuit board 9A is connected is closer to the side of the connector than the contact 4 (4A, 4B) to be connected to the second (upper) circuit board 9B. 51 is provided so as to be located on the tip side. These contacts 3, 4 are respectively connected to the base 5 of the connector.
The circuit board 9 is housed in the recesses 50a and 50b arranged in a step shape in the horizontal direction, and is electrically connected to terminal portions formed on both front end sides of the circuit board 9.

The contacts 3 that are conductively connected to the first circuit board 9A are two types of contacts 3A and 3B corresponding to the terminals on both sides of the first circuit board 9A.
As shown in FIG. 6, the contact 3A has a contact portion 31 of the contact branched from a substantially central portion of the fixed holding portion 32 of the contact. Contact part 3 of contact
1 has a meandering shape and is provided with a spring property. The contact soldering portion 33 is a contact fixing holding portion 3.
2 and is formed on the front side of the contact portion 31 of the contact. Therefore, the contact portion 3 of the contact
Even if 1 is pressed, no force in the peeling direction acts on the soldered portion 33 of the contact of the first contact 3A in the present embodiment. In contrast, the adjacent contact 3B
Similarly, the soldering part 37 of the contact is located on the tip side of the fixed holding part 36 of the contact and in front of the contact part 35 of the contact. However, as shown in FIG. 35 and fixed holding part 3 of contact
6 are inserted. Therefore, unlike the first embodiment, when a force is applied to push the contact portion 35 of the contact in a direction away from the fixed holding portion 36 of the contact, the solder portion 37 of the contact moves forward of the contact portion 35 of the contact. Since it is located, a force in the peeling direction acts, and the soldered portion 37 of the contact tends to rise from the substrate. Therefore, the second contact 3B has
From the contact soldering portion 37, the connector base 50
On the side, an engagement holding portion 38 of the contact that engages with the base 50 of the connector is formed. Thereby, the possibility that cracks occur in the solder of the soldering portion 37 of the contact at the time of connection with the circuit board is prevented.

Contact 4 to which circuit board 9B is connected
Is composed of a contact 4A for making conductive contact with a terminal formed on one surface of the circuit board 9 and a contact 4B for making conductive contact with a terminal formed on the other surface. 4B are alternately arranged. As shown in FIG. 6, the contact portion 41 of the first contact 4A is pressed by the circuit board 9B in a direction approaching the fixed holding portion 42 of the contact, that is, on the soldering portion 43 side of the contact. The pressing force of the contact force P is applied toward the surface. Since the soldering portion 43 of the contact is formed integrally with the fixed holding portion 42 of the contact on the side opposite to the limb having the contact portion 41 of the contact, when a pressing force is applied to the contact portion 41 of the contact, the arrow As shown by the symbol, there is a possibility that a force to lift up from the substrate acts to cause cracks in the solder. Therefore, contact 4
In A, an engagement holding portion 44 of the contact which engages with the base 50 of the connector is formed on the side of the fixed holding portion 42 of the contact from the soldering portion 43 of the contact, and the soldering portion 43 of the contact rises. Attempting to do so is prevented by the engagement holding portion 44 of the contact.

On the other hand, as shown in FIG. 7, in the second contact 4B, the circuit board 9B is located at a position between the contact portion 45 of the contact and the fixed holding portion 47 of the contact. The contact portion 45 of the contact of the second contact 4B exerts a force that opens in a direction away from the fixed holding portion 47 of the contact. Therefore, no force in the peeling direction acts on the soldered portion 48 of the contact of the second contact 4B, and conversely, a force pressed against the substrate acts on the soldered portion 48 of the contact. Therefore, in the present embodiment, the engagement holding structure with the base 50 of the connector for preventing the soldering portions 37 and 43 of the contacts from floating is the lower contact 3.
Is applied to the second contact 3B, and the upper contact 4 is applied to the first contact 4A.

In the present embodiment, the first circuit board 9A is formed at the lower end of the connector 51 at the bottom thereof in the vertical direction below the side portion 51 of the connector.
A pair of latches 52 that are locked to the locking portions 90 of the first circuit board 9A when inserted into the first circuit board 9A are formed so as to face each other. These pair of left and right latches 52
Are formed so as to have elasticity in the facing direction, and the locking claw portion of the latch 52 engages with the locking portion 90 on the upper surface of the circuit board 9A in a state where the circuit board 9A is sandwiched.

A notch 91 is formed on the circuit board 9 on the rear side of the locking section 90 (on the side opposite to the insertion end). When the circuit board 9 is the first circuit board 9 </ b> A, the notch 91 connects the first circuit board 9 </ b> A to the connector 1.
The edge of the first circuit board 9A collides (interferes) with the latch 53 when the first circuit board 9A is inserted into the connector 53, so that the first circuit board 9 is rotated through the latch 53 to the connection position. is there. Therefore, when the circuit board 9 is the second circuit board 9B, the notch 91 is not necessary.

Further, when the second circuit board 9B is inserted into the concave portion 50b of the connector base 50 above the latch 52 and closer to the base 50 of the connector,
Pair of latches 5 to be locked to the locking portions 90 of the circuit board 9B of FIG.
3 are formed so as to face each other. The pair of left and right latches 53 is also formed so as to have elasticity in the facing direction, and the locking claws of the latches 53 are engaged with the locking portions 90 on the upper surface of the second circuit board 9B in a state where the circuit board 9B is sandwiched. It is configured to engage. The latch 53 has a protrusion 53a having a protrusion amount substantially equal to the protrusion amount of the locking claw portion. As shown in FIG. 8, a tapered portion 53b is formed below the convex portion 53a .
The second circuit board 9B is guided on the tapered portion 53b and is brought into an engaged state with the latch 53. That is, if the insertion depth is incomplete, the second circuit board 9B will
It is configured such that a does not ride on the locking portion 90 of the second circuit board 9B to be locked. As shown in FIG. 8, when the second circuit board 9B is inserted and rotated in the direction of the arrow, the side surface of the second circuit board 9B
There is a case where it stops at the position of the convex portion 53a in view of a. However, if the user holds the second circuit board 9B and turns it upward, the taper portion 53b can be moved over and removed. Also, depending on the setting of the shape of each related member, etc., the second circuit board 9 may be used.
It is also possible to configure so that the tapered portion 53b can be moved over by the restoring force of B.

[0024]

As described above, according to the present invention, when the circuit board is connected, even if a force for lifting the soldered portion from the soldered board acts, the raised portion is lifted by the engagement holding portion. Is effectively prevented, so that cracks do not occur in the solder of the soldering portion, and stable mounting of the connector can be ensured.

[Brief description of the drawings]

FIG. 1 is a four-sided view of a connector according to a first embodiment of the present invention, in which (a) is a rear view, (b) is a plan view, (c) is a front view, and (d) is a side view. .

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a perspective view showing a connector according to the first embodiment of the present invention.

FIGS. 5A and 5B are four side views of the connector according to the second embodiment of the present invention, wherein FIG. 5A is a rear view, FIG. 5B is a plan view, FIG. 5C is a front view, and FIG. .

6 is a sectional view taken along the line CC in FIG.

FIG. 7 is a sectional view taken along line DD in FIG. 5;

FIG. 8 is a perspective view showing a connector according to a second embodiment of the present invention.

FIG. 9 is a plan view schematically showing a card-type electronic device connected to the connector of the present invention.

FIG. 10 is a side sectional view showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 2 Contact 3 Contact 4 Contact 5 Connector 9 Circuit board 10 Connector base 11 Connector side 12 Latch 21 Contact contact part 22 Contact fixed holding part 23 Contact soldering part 24 Contact engagement holding part 25 Contact 28 Contact soldering part 31 Contact contact part 32 Contact fixed holding part 33 Contact soldering part 35 Contact contact part 36 Contact fixed holding part 37 Contact soldering part 38 Contact engagement holding part 41 contact contact part 42 contact fixed holding part 43 contact solder part 44 contact engagement holding part 45 contact contact part 48 contact solder part 50 connector base 51 connector side part 52 H 53 Latch

Continuation of the front page (56) References JP-A-2-123081 (JP, U) JP-A-3-26975 (JP, U) JP-A 64-9376 (JP, U) JP-A 56-166681 (JP) , U) Japanese Utility Model Application Hei 6-88073 (JP, U) Japanese Utility Model Application Hei 6-31078 (JP, U) Japanese Utility Model Application Hei 4-46366 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB Name) H01R 23 / 00,23 / 68

Claims (1)

(57) [Claims] 1. An edge connector for inserting a circuit board into a base portion of a connector and pressingly connecting a terminal of the circuit board to a contact portion of a contact fixed and held in the base portion to electrically connect the terminal, wherein the contact is soldered. Part and
When connecting the circuit board,
First contact that receives force in the direction of rising
And the one pressed against the board against the soldered part
Edge, which is classified as
In the connector, the first contact has an engagement holding portion formed in a state of being separated from the contact portion, and the engagement holding portion has a contact of the first contact when the circuit board is connected. for the soldering portion is pressed by the part is elastically deformed to prevent the floating of the substrate, the connector characterized by engaging a predetermined position of the connector base.